I realize I stray from the title of this thread, but one Lucretian passage I return to when it comes to gods is in Book 2:
In many a way she brings the many forth
Into the light of sun. And here, whoso
Decides to call the ocean Neptune, or
The grain-crop Ceres, and prefers to abuse
The name of Bacchus rather than pronounce
The liquor's proper designation, him
Let us permit to go on calling earth
Mother of Gods, if only he will spare
To taint his soul with foul religion.
Here, we're given permission to personify physical things metaphorically as gods. Why not metaphorical ideal lives as gods?